Improvement in veneer-cutting machines



J. B. ANNIN89 15A. NUTT.

VENEERQCQUT'IING MACHINE. I

Patented Nov; 9, 187; 5, align]; I

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a a i 0 a I l V I g n I III -"IIIIIIIIIL 'IA WITNESSES:

NJ'HERS, PHOTO-LITNOGRAPHER. WASHINGTOM U c.

JAMES B. ANNIN AND JOHN A. NUTT, OF ROCHESTER, ASSIGNORS TO ELIHU J.GRANGER, 0F BROOKLYN, NEW YORK.

IMPROVEMENT IN VENEER-CUTTING MACHINES.

Specification forming part of Letters Patent N 0. 169,759, datedNovember 9, 1875 application filed April 17, 1875'. l

To all whom it may concern:

- Be it known that we, JAMES B. ANNIN and JOHN A. NUTT, of Rochester, inthe county of Monroe and State of New York, have invented an Improvementin Veneer-Cutting Machines, of which the following is a specification:

Our improvement relates to machines for cutting compressed veneers fromcylinders of wood; and our invention consists in the arrangement of aroller, which engages the cylinder in advance of the line of cut, andthus resists the thrust of the cutting-instrument, and counteracts itstendency to split off a segment of the cylinder.

Our roller has a positive motion, and, therefore, assists in rotatingthe cylinder from which the veneer is being cut, and is operated by thenecessary mechanism for graduating its position and speed as thecylinder is reduced in size by the cutting of the veneer. Our invention,therefore, has two distinguishing featuresfirst, that of supporting thecylinder of wood against the thrust of the cutting-instrument, and,secondly, that of driving the cylinder of wood from its periphery. Weare thus relieved from the necessity of depending solely upon the dogswhich engage the ends of the cylinder, and which, in some cases, willtear out of the ends when the dogs are alone relied upon for holding andturning the cylinder.

The accompanying drawings are as follows:

Figure 1 is a sectional elevation of aveneer-cutting machine embodyingmy improvement. Fig. 2 is a top view of the machine.

' Fig. 3 is a horizontal section through the line centers B, andrevolved against the cutter 0, outside of which is the ordinarycompressionroller D /which acts directly in advance of the line of cut,to prevent the checking of the wood as the veneer is separated from thelog. The cutter and compression-roller are mounted on a carriage, Ewhich is fed up to the cylinder of wood or log by leading-screws or anyother suitable means.

Our roller F is mounted upon a rocking frame, G, which is pivoted on thecutter-carriage, and moves back and forth with it. The carriage E isrocked, so as to'throwthe roller forward as the cutter-carriage movestoward the log,'by means of the cam-guides I. Our roller F is 'geared obevelerh to the :lfi

driving-shafuJ, and, beingit us rotated, is made to constitute anauxiliary means of revolving the veneer-10g.

As the cutting operation proceeds, and the veneer-log diminishes indiameter, the speed of our driving-roller Fyis diminished by means ofthe cone-pulleys K andbelt L. The movement of the belt L is. governed bytheshifting-slide M, which derives its motion from the carriage of theback pressure-roller N by means of the train of gearing O, P, and Q, asshown.

In the ordinary veneer-cutting machines of this class heretofore used,the carriages whichsupport, respectively, the back roller and thecutting -instrument are fed toward the log with a motion correspondingto the diminution in diameter of the log as the veneer is .cuttherefrom.

We claim as our inve'ntion In a machine for cutting compressed veneersfrom a revolving cylinder of wood, the combination, with thecutting-instrument, of a roller having its bearing upon the cylinder ofwood in advance of the line of cut, as shown, for the purpose ofresisting the thrust of the cutting-instrument, and preventing thesplitting of segments of wood'from the revolving cylinder during theoperation of cutting compressed veneers therefrom.

2. The combination of the roller F, mounted in the frame G, with thecam-guides I, for

TENT, OFFI E}.

the purpose of mainteining the engagement lar decrement of speeches thelog is reduced of the roller F with the cylinder of wood, as in diameterby the cutting of the veneer. the letter is gradually diminished indiameter by the cutting of the veneer from it. 1 JAMES B. ANNIN. 3. Thecombination of the eutting-instru- JOHN A. NUTT. ment 0 and thecompression-roller D with Witnesses:

the driving-roller F, mounted in the rocking DANIEL WOOD, frame G, and.rotated positively with a regu- JAMEs M. LEONARD.

